One good-humoured social media user wrote: "No Monopoly stickers at McDonald's? What is this dark magic?"

Bosses at the chain moved to discuss the issue with diners and customers on Twitter.

A spokesperson told Mirror.co.uk said: “More people than ever before have taken part in this year's Monopoly promotion, and we're on track to give away more prizes than ever – so far more than 7 million prizes have been won.

"Unfortunately this unprecedented popularity has led to some stores selling out of promotional packaging before the promotion ends next Tuesday."